A. String Task

                                                                 A. String Task time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output

Petya started to attend programming lessons. On the first lesson his task was to write a simple program. The program was supposed to do the following: in the given string, consisting if uppercase and lowercase Latin letters, it:

• deletes all the vowels,
• inserts a character "." before each consonant,
• replaces all uppercase consonants with corresponding lowercase ones.

Vowels are letters "A", "O", "Y", "E", "U", "I", and the rest are consonants. The program's input is exactly one string, it should return the output as a single string, resulting after the program's processing the initial string.

Help Petya cope with this easy task.

Input

The first line represents input string of Petya's program. This string only consists of uppercase and lowercase Latin letters and its length is from 1 to 100, inclusive.

Output

Print the resulting string. It is guaranteed that this string is not empty.

Examples Input Copy

tour
      

Output Copy

.t.r
      

Input Copy

Codeforces
      

Output Copy

.c.d.f.r.c.s
      

Input Copy

aBAcAba
      

Output Copy

.b.c.b      

按題目意思将字元串裡的A E I O U Y,或a e i o u y去掉并将所有大寫轉換為小寫并在每個字元前加上  .  輸出，

解題思路：先将大寫轉換為小寫，然後判斷每個字元是否是上述字元中的其中一個，如果不是則存入另外一個數組中，

然後以 .%c輸出剩下的字元即可。

代碼：